Dyfyniad APA

(1989). Guide For Measuring, Mixing, Transporting, And Placing Concrete. ACI.

Dyfyniad Arddull Chicago

Guide For Measuring, Mixing, Transporting, And Placing Concrete. ACI, 1989.

Dyfyniad MLA

Guide For Measuring, Mixing, Transporting, And Placing Concrete. ACI, 1989.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.